<template>
  <div>
    <Navbar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
             :key="index"
             class="title-item"
             :class="{active: index===currentIndex}"
             @click="titleClick(index)">
          {{item}}
        </div>
      </div>
    </Navbar>
  </div>
</template>

<script>
import Navbar from 'components/common/navbar/Navbar'
export default {
  name: 'DetailNavbar',
  components: {
    Navbar
  },
  data () {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    }
  },
  methods: {
    titleClick (index) {
      this.currentIndex = index
      this.$emit('titleClick', index)
    },
    backClick () {
      this.$router.go(-1)
    }
  }
}
</script>

<style scoped lang="scss">
  .back{
    img{
      margin-top: 12px;
    }
  }
  .title{
    display: flex;
    font-size: 13px;
    .title-item{
      flex: 1;
    }
  }
  .active{
    color: var(--color-high-text);
  }
</style>
